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Communication Dans Un Congrès Année : 2022

Geometric versus Probabilistic Shaping for Circular-QAM with Nonbinary LDPC Codes

Résumé

This paper studies new geometrically shaped circular quadrature amplitude modulation (CQAM) constructions that can approach the Gaussian capacity. Then, we compare the performance of obtained constellations with existing Gaussian shaping strategies for regular and some simple optimized non-binary protographs. We also investigate the potential benefit of additional probabilistic shaping on the proposed CQAMs.
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Dates et versions

hal-04174197 , version 1 (31-07-2023)

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Asma Maalaoui, Charly Poulliat, Iryna Andriyanova. Geometric versus Probabilistic Shaping for Circular-QAM with Nonbinary LDPC Codes. IEEE International Symposium on Information Theory (ISIT 2022), IEEE, Jun 2022, Espoo, Finland. pp.396-401, ⟨10.1109/ISIT50566.2022.9834656⟩. ⟨hal-04174197⟩
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